.page-home {
  position: relative;
  overflow-x: clip;
  background: var(--ink-void);
  color: var(--ink-star);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.85;
}

/* ---------- 星点背景 ---------- */
.page-home .home-starfield {
  position: absolute;
  inset: 0 0 auto 0;
  height: 260vh;
  z-index: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    radial-gradient(1.2px 1.2px at 18% 22%, rgba(238, 243, 251, .55), transparent 62%),
    radial-gradient(1px 1px at 64% 12%, rgba(185, 194, 212, .45), transparent 62%),
    radial-gradient(1.6px 1.6px at 82% 44%, rgba(34, 211, 238, .4), transparent 62%),
    radial-gradient(1px 1px at 34% 68%, rgba(244, 114, 182, .35), transparent 62%),
    radial-gradient(1.2px 1.2px at 8% 82%, rgba(238, 243, 251, .35), transparent 62%),
    radial-gradient(1px 1px at 92% 88%, rgba(139, 92, 246, .42), transparent 62%);
  background-size: 620px 620px;
  animation: home-twinkle 11s ease-in-out infinite;
}

@keyframes home-twinkle {
  0%, 100% { opacity: .42; transform: translateY(0); }
  50% { opacity: .68; transform: translateY(-2px); }
}

@keyframes home-orbit-spin {
  to { transform: rotate(360deg); }
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  z-index: 1;
  padding-block: clamp(2.75rem, 9vw, 6.5rem);
}

.page-home .home-hero__grid {
  display: grid;
  gap: clamp(2.25rem, 7vw, 4rem);
  align-items: center;
}

.page-home .home-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem .9rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-silver);
}

.page-home .home-hero__eyebrow .rail-index {
  color: var(--cyan);
}

.page-home .home-hero__eyebrow-text {
  letter-spacing: .08em;
  text-transform: none;
}

.page-home .home-hero__title {
  margin: 1.35rem 0 0;
  font-family: var(--font-head);
  font-size: min(var(--fs-h1), 3.5rem);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.22;
  color: var(--ink-star);
}

.page-home .home-hero__accent {
  background: linear-gradient(96deg, var(--violet), var(--pink) 52%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-home .home-hero__lede {
  margin: 1.5rem 0 0;
  max-width: 34em;
  color: var(--ink-silver);
}

.page-home .home-hero__entries {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .6rem;
  margin: 2.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .home-hero__entry {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .6rem .95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(13, 20, 43, .62);
  color: var(--ink-star);
  font-family: var(--font-head);
  font-size: .9375rem;
  letter-spacing: .02em;
  text-decoration: none;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}

.page-home .home-hero__entry:hover,
.page-home .home-hero__entry:focus-visible {
  border-color: var(--cyan);
  background: rgba(34, 211, 238, .08);
  color: var(--cyan);
}

.page-home .home-hero__entry-idx {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--ink-silver);
  transition: color var(--ease);
}

.page-home .home-hero__entry:hover .home-hero__entry-idx,
.page-home .home-hero__entry:focus-visible .home-hero__entry-idx {
  color: var(--pink);
}

.page-home .home-hero__visual {
  position: relative;
  margin: 0;
  width: min(100%, 24rem);
  justify-self: center;
  aspect-ratio: 1;
  isolation: isolate;
}

.page-home .home-hero__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.page-home .home-hero__visual::before,
.page-home .home-hero__visual::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.page-home .home-hero__visual::before {
  inset: -12%;
  border: 1px solid rgba(139, 92, 246, .3);
  border-top-color: var(--pink);
  border-right-color: var(--cyan);
  box-shadow: 0 0 100px rgba(139, 92, 246, .26);
  animation: home-orbit-spin 54s linear infinite;
}

.page-home .home-hero__visual::after {
  inset: -2%;
  z-index: 2;
  background: radial-gradient(circle at 50% 50%, rgba(6, 10, 23, 0) 56%, rgba(6, 10, 23, .72) 100%);
}

/* ---------- 章节骨架 ---------- */
.page-home .home-chapter {
  position: relative;
  z-index: 1;
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-home .home-chapter__grid {
  display: grid;
  gap: 1.5rem 2rem;
}

.page-home .home-chapter__rail {
  align-self: start;
}

.page-home .home-chapter__title {
  margin: .7rem 0 0;
  font-family: var(--font-head);
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.3;
  color: var(--ink-silver);
  transition: color 300ms ease;
}

.page-home .home-chapter.is-inview .home-chapter__title {
  color: var(--ink-star);
}

.page-home .home-chapter__lede {
  margin: 0 0 1.65rem;
  max-width: 36em;
  color: var(--ink-silver);
}

.page-home .home-chapter__media {
  margin: 0 0 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .home-chapter__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .home-chapter__foot {
  margin: 1.75rem 0 0;
}

/* ---------- 轨道式四板块 ---------- */
.page-home .home-orbit {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .home-orbit__row {
  position: relative;
  padding: 1.5rem 0 1.5rem 2.25rem;
  border-bottom: 1px solid var(--line);
}

.page-home .home-orbit__row::before {
  content: "";
  position: absolute;
  left: .55rem;
  top: 1.75rem;
  bottom: 1.75rem;
  width: 1px;
  background: linear-gradient(180deg, var(--violet), rgba(139, 92, 246, 0));
  transition: background var(--ease);
}

.page-home .home-orbit__row:hover::before,
.page-home .home-orbit__row:focus-within::before {
  background: linear-gradient(180deg, var(--cyan), rgba(34, 211, 238, 0));
}

.page-home .home-orbit__dot {
  position: absolute;
  left: calc(.55rem - 3px);
  top: 1.95rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-void);
  border: 1px solid var(--violet);
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-home .home-orbit__row:hover .home-orbit__dot,
.page-home .home-orbit__row:focus-within .home-orbit__dot {
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(34, 211, 238, .7);
}

.page-home .home-orbit__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--ink-silver);
}

.page-home .home-orbit__name {
  margin: .3rem 0 0;
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-star);
}

.page-home .home-orbit__desc {
  margin: .6rem 0 0;
  max-width: 40em;
  color: var(--ink-silver);
}

.page-home .home-orbit__link {
  display: inline-block;
  margin-top: .5rem;
  font-family: var(--font-head);
  font-size: .875rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .35);
  transition: border-color var(--ease), color var(--ease);
}

.page-home .home-orbit__link:hover,
.page-home .home-orbit__link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--ink-star);
}

/* ---------- 时间线 ---------- */
.page-home .home-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.75rem;
  list-style: none;
}

.page-home .home-timeline::before {
  content: "";
  position: absolute;
  left: .35rem;
  top: .7rem;
  bottom: .7rem;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 60%, rgba(139, 92, 246, 0));
}

.page-home .home-timeline__item {
  position: relative;
  padding-bottom: 1.85rem;
}

.page-home .home-timeline__item:last-child {
  padding-bottom: 0;
}

.page-home .home-timeline__node {
  position: absolute;
  left: calc(-1.75rem + .35rem - 3px);
  top: .7rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-void);
  border: 1px solid var(--cyan);
}

.page-home .home-timeline__item:first-child .home-timeline__node {
  box-shadow: 0 0 12px rgba(34, 211, 238, .75);
}

.page-home .home-timeline__time {
  margin: 0 0 .3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-home .home-timeline__title {
  margin: 0 0 .45rem;
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink-star);
}

.page-home .home-timeline__text {
  margin: 0;
  max-width: 40em;
  color: var(--ink-silver);
}

/* ---------- 设备适配 ---------- */
.page-home .home-device {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-home .home-device__row {
  display: grid;
  gap: .35rem 1.25rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.page-home .home-device__key {
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: .16em;
  color: var(--pink);
}

.page-home .home-device__val {
  margin: 0;
  color: var(--ink-silver);
}

/* ---------- 更新节奏 ---------- */
.page-home .home-cadence {
  display: grid;
  gap: 1.35rem;
}

.page-home .home-cadence__item {
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--line);
  transition: border-color var(--ease);
}

.page-home .home-cadence__item:hover {
  border-top-color: var(--cyan);
}

.page-home .home-cadence__when {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: .12em;
  color: var(--amber);
}

.page-home .home-cadence__title {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink-star);
}

.page-home .home-cadence__text {
  margin: 0;
  color: var(--ink-silver);
  font-size: .9375rem;
}

.page-home .home-keep {
  margin-top: 2.25rem;
  padding: 1.4rem 1.35rem;
  border-left: 2px solid var(--violet);
  background: linear-gradient(100deg, rgba(139, 92, 246, .14), rgba(6, 10, 23, 0) 72%);
}

.page-home .home-keep__title {
  margin: 0 0 .5rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink-star);
}

.page-home .home-keep__text {
  margin: 0;
  max-width: 38em;
  color: var(--ink-silver);
}

/* ---------- 联系入口 ---------- */
.page-home .home-reach__grid {
  display: grid;
  gap: 1.35rem;
}

.page-home .home-reach__card {
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--line);
}

.page-home .home-reach__card-title {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink-star);
}

.page-home .home-reach__card-text {
  margin: 0;
  color: var(--ink-silver);
  font-size: .9375rem;
}

.page-home .home-reach__foot {
  margin: 2rem 0 0;
}

/* ---------- 宽屏 ---------- */
@media (min-width: 760px) {
  .page-home .home-orbit__row {
    display: grid;
    grid-template-columns: 11rem minmax(0, 1fr) auto;
    gap: 0 1.5rem;
    align-items: start;
  }

  .page-home .home-orbit__head {
    grid-column: 1;
  }

  .page-home .home-orbit__desc {
    grid-column: 2;
    margin-top: 0;
  }

  .page-home .home-orbit__link {
    grid-column: 3;
    margin-top: .15rem;
    white-space: nowrap;
  }

  .page-home .home-device__row {
    grid-template-columns: 6rem minmax(0, 1fr);
    align-items: baseline;
  }

  .page-home .home-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .home-reach__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .home-chapter__grid {
    grid-template-columns: 12.5rem minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-home .home-chapter__rail {
    position: sticky;
    top: 6.5rem;
  }
}

@media (min-width: 980px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }

  .page-home .home-hero__visual {
    width: min(100%, 27rem);
    justify-self: end;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .home-starfield,
  .page-home .home-hero__visual::before {
    animation: none;
  }

  .page-home .home-chapter__title,
  .page-home .home-orbit__dot,
  .page-home .home-orbit__link,
  .page-home .home-hero__entry {
    transition: none;
  }
}